Authors: Karen E A Burns; Mark Duffett; Michelle E Kho; Maureen O Meade; Neill K J Adhikari; Tasnim Sinuff; Deborah J Cook Journal: CMAJ Date: 2008-07-29 Impact factor: 8.262
Authors: Carol Bennett; Sara Khangura; Jamie C Brehaut; Ian D Graham; David Moher; Beth K Potter; Jeremy M Grimshaw Journal: PLoS Med Date: 2011-08-02 Impact factor: 11.069